Shifting device for positioning mechanism for brush machines



July 10, 1928. 1,676,640 W. S. ELLIOT SHIFTING DEVICE FOR POSITIONING MECHANISM FOR BRUSH MACHINES Filed Feb. 24, 1925 2' Sheets-Sheet 1 W W Q Iii- July 10, 1928. 1,676,640

w. s. ELLIOT SHIFTING DEVICE FOR POSITIONING MECHANISM FOR BRUSH uAOflINES File F 1925 jSheets-Sheet 2 INQEN'L V:

WWWZWKMM% Patented July 10, 1928.

unites starts PATENT oFFicE.

WILLIAM s. ELLIOT, or NGRTHAMBTON, lvmssnonosnrrs, ASSIGNOR r'o PRO-PHY- LAo-Trc mwsrr COMPANY, or noR-rHAMPro-N, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

SI-IIFTING- DEVICE 13 GB PQSITYEONIN G MECHANISM FOR BRUSH MACHINES.

\ Application filed February 24 1925' Serial. No 1511,0963;

The present invention has for its objectan improvement in the brush machine shown. in the patent to Herman M. Schwartz, No,

1,125,187, dated January 19, 1915, in which the general features of the machine are fully shown and described. In that machine there is a travelling carrier in the form of an endless chain made up of a series of brush holders to which the brush backs to be drilled and tufted are attached. There is also automatic mechanism including two cams on a cam shaft which move the travelling carrier horizontally and vertically toposition. the brush lengthwise and crosswise,

carrier in its orbit after the completion of each brush or pair of brushes. The mechanism for revolving the travelling carrier is:

conveniently shown as the shi-ft'ng mechanism, it shifts the completed brushr out of position and an unfilled brush blank into position to be drilled and tufted. The present invention has for itsv object to improve-- to an understanding of the improved shifting mechanism have not been shown or described s'nce reference may be made to the said patent to Schwartz for further informa- 131011. I

The invention. will be. fully understood from thefollowing description when taken in connection with the accompanying drawings, and the novel featuresthereof will be pointed out and clearly defined in the claims at the close of this. specification.

Fig. 1. is a side elevation of the positioning mechanism of a brush machine. embodying my invention. 2 r

Fig. 2 is a rear elevation of the machine.

Fig. 3 is an enlarged sectional view taken. on line 33 of Fig. 1.

Fig. 3'. I 1 Referring now to the drawings 1,

At A is shown the drill and at B the: tnfter of a brush machine of the type in question. I The travelling carrier, which in this machine is in the form of an endless chain. is designated C and is supported on brackets D and E which are themselves carried on the and mechanism for revolving the travelling Fig. a is a section-taken on line 4%,.

vertical slide: F. The: horizontal slide is: shown at G and the cams which operate the slides are shown at H and; I respectively, these cams being located on the cam shaft 11. lit will be understood that the rotation of the cam shaft 11 turns the cams H and Land lifts the carrier and moves ithorizontally in accordance with the pattern of the holes in the brush: back. It will also be understood that when each brush has been drilled or filled, as the case may be, it is necessary to move the travelling carrier in its orbit tobring other brush backs intooperating posiregistration of the brush backs withregard to the drill and tufter will be perfect. It

will be understood that the mechanism just described is not novel having been shown in v the said patent to Schwartz, and forms no part of the present invention except in combination with other features.

The shifting mechanism will now be described. a

Referring now. to Figs. 1 and 2, at 12 is shown a linger having an inclined end at. This finger is secured to the rear end of the cam shaft 11 and revolvesv with it. In the path of the inclined surfaceof the finger 12 is one end 6 of a bell crank 13 pivoted at 14; to the frame of the machine. The arm 12 therefore engages the inclined surface I) on the bell crank 13 once for each revolution of the cam shaft 11 and swings the bell crank as it passes. The other arm of the bell crank. is connected by a link 15- toazswingi ng arm 16 pivoted at 17 to the frame of the machine. This swinging. arm 16 has an eX- tension. 18 below the pivot 17 to which issecured spring 19 which serves to hold the upper end of the swinging arm 16' to the right,v as shown in Fig. 2.

Crosswise of the rear of the machine is; a rotatable clutch'shaft 20, on which is loosely mounted a constantly running sprocketwheel 21, driven by a chain" 22 from a sprocket wheel'23, secured to some: constantly running shaft of-the machine. The hub of the sprocket wheel 21'fo-rms. one part of a, roll clutch of ordinary construction, rollers: being shown at 25. Fast to the shaft 20 is the clutch member 26 on the hub 8 of which is loosely mounted the shell 27, of the clutch.

An arm 28 secured to the clutch member 26 is connected by a spring 29 to a stud 30 on the shell 27 The spring 29 tends to rotate the shell relatively to the clutch member 26. The shell 27 is provided with'a projection 31 having a face 0 to engage the upper end of the swinging arm 16 which has already been described.

The structure described is such that when the finger 12 on the cam shaft 11 strikes the surface I) on the bell crank 13 it pulls the upper end of the swinging arm 16 out from under the stop surface 0 on the clutch shell 27, and the spring 29 then rotates the shell enough to cause the rollersto ride up on the inclined surfaces 7 of the member 26 and connect said member with the sprocket 21 so that the shaft 20 will be revolved by said sprocket. This movement continues for one revolution but is stopped by the surface 0 on the shell striking the upper end of the arm 16 which has in themeantime been swung back into place by the spring )n the left hand end of the clutch shaft 20 is a crank arm 32 connected by a crank pin 33 to a block 34. This block is forked and connected by a pivot 35 to a link 36. The other end efthe link is likewise connected by a vertical pivot 37 to an arm 38. The vertical pivots 35 and 37 allow for the horizontal movement of the carrier lengthwise of thebrush whr h would otherwise cramp or bend the connections between the crank arm 32 and the travelling carrier.

The arm 38 is connected to the locking lever39 which is pivoted at 40 to the bracket E and operates th locking pins 11 which look the chain in position so that each brush bark is perfectly centered and held innnovably during the operation of the drill and tufter. The locking lever 39 also operates through the pin 42 and slotted link 41.3 and the shifting lever 4-4- which moves th chain by means of a pawl4t5 engaging a ratchet wheel 46 on the shaft 47 which carries the sprocket wheel for the chain.

As explained in the Schwartz patent pre viously mentioned, the first movementof the locking lever to the left, as shown in Fig. 1, unlocks the chain, while further movement moves the shifting lever 44- and causes the pawl to revolve the chain and shift the brush holders.

The shifting mechanism described he ein and embodying the present invention has proved in actual service to be much more 4 satisfactory thanthe mechanism shown in the said Schwartzpatent. as it is much more reliable in. operation and does not subj ect the machine to a violent shock when it operates.

It' is also less likely to get out of order and is much quieter,

I claima 1. In a brush machlne having a travelling blank carrier, in combination, a shaft, mechfor shifting the carrier including a constantly rotating member, a crank, a clutch operatively connecting said crank and the rotating member, and mechanism controlled by the shaft for actuating the clutch once for each revolution of the shaft.

3. In a brush machine having a travelling blank carrier, in combination, a shaft, mech anism for shifting the carrier including a constantly rotating memberfa crank, a finger on said shaft, a clutch connecting the crank to said rotating member. and mechanism operated by said linger for operating the clutch each time it is engaged by said finger. v

4-. In a brush machine having a travelling carrier, in. combination, a shaft, mechanism for shifting the carrier including a con stantly rotating member, a crank, a roller clutch connecting said crank to the constantly rotating member, a stop for one member of th clutch, an arm adapted to engage'said stop, and. a fingeron said shaft adapted to cause movementof said 11111110 engage said stop thereby permitting the clutch to connect said crank to said constantly rotating member.

5. In a brush machine having atravelling blank carrier, in combination, a shaft, a constantly rotating member having a hub forming one member of a roller clutch, ac clutch shaft having clutch member there-v on, a crank on said clutch shaft, driving means for the carrler operated by said crank,

a stop carried by said clutch member on the clutch member for shifting said carrier, a

rotary shaft, and means auton'iaticallycontrolled thereby for intern'iittently connecting said clutch members. 1 I

In testimony whereof I affix my signature.

WILLIAM s. ELLIOT. 

